With a reasonably narrow topline and only a moderate level of offset, the Srixon ZX5 irons look like a better-player’s club in the address position. Still, the company has added several distance-enhancing technologies that should make it appealing to mid-handicap players.
The chassis is forged from 1025 mild-carbon steel for a better feel, but the face is the real story with this iron. It is made using SUP10 stainless steel, a very hard material, and it looks like other faces on the outside.
The inner-facing side, however, is covered with grooves, valleys and channels. Srixon refers to the design as MainFrame, and those elements were added after engineers set parameters and programmed supercomputers to simulate thousands of different face designs and test how they performed using artificial intelligence. The result is a face that maximizes deflection and enhances ball speed across a larger area of the hitting surface, so mishits carry nearly as far as well-struck shots.
The ZX5 is also hollow, so the face can flex more efficiently at impact for more ball speed and distance.
Srixon has also added high-density tungsten to the toe of the ZX5 to counteract the hosel’s weight and pull the ideal hitting area into the center of the hitting area.
To help the clubs work through the turf more effectively, the ZX5 irons have been made with Srixon’s Tour VT sole. It adds a seam in the center of the sole that runs from the heel to the toe, creating a shallow V-shape.
Finally, the grooves in the ZX5 long and mid-irons (3-7) have wider and shallower grooves than the grooves in the short irons (8-PW). The wider grooves should help impart more spin on the ball with lower-lofted clubs for more lift and carry distance. Making the grooves deeper and narrower in the short irons should promote consistency.
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